One of my Christmas presents was a Belkin Cushtop which is basically a hard, angled cushion that allows you to sit with a hot laptop (such as the MacBook Pro that I use) on your lap for literally hours on end with no problems. I used it all day yesterday just sat on the sofa catching up with work and I must say it’s very good, no back ache, burned legs or burnt out laptop, so if you like to sit in a comfy chair with your computer for extended periods of time I can definitely recommend it.